Kazuki Oka

Title: Kazuki Oka: Innovator in Magnetic Marker Technology

Introduction

Kazuki Oka is a prominent inventor based in Kyoto, Japan. He has made significant contributions to the field of magnetic marker technology, holding a total of 3 patents. His innovative work focuses on the development of magnetic markers that exhibit superior characteristics for various applications.

Latest Patents

Kazuki Oka's latest patents include a magnetic marker and a process for manufacturing a roll having a plurality of these markers. The magnetic marker comprises a flexible organic polymer substrate with an anisotropic thermal shrinking property and a soft magnetic thin film that has uniaxial magnetic anisotropy. The angle formed between the direction of the highest degree of thermal shrinkage of the organic polymer substrate and the direction of the magnetic easy axis in the soft magnetic thin film ranges from 50 degrees to 90 degrees. This design allows the marker to maintain a simple structure while exhibiting satisfactory magnetic characteristics. The manufacturing process utilizes a combination of a roll coater method and a sputtering technique, enabling continuous production of magnetic markers with excellent properties.

Another notable patent is for a compact and superior magnetic marker designed for electronics apparatuses used in the surveillance of articles. This marker consists of one or more wire members and a plane member that contact each other directly. The angle of the magnetic easy axis of the plane member relative to the longitudinal direction of the wire member is between 40 degrees and 90 degrees, which enhances the Barkhausen reversal effect. This simple structure reduces the influence of the demagnetizing field and allows for low-cost continuous production.

Career Highlights

Kazuki Oka is currently employed at Unitika Ltd., where he continues to innovate in the field of magnetic technology. His work has garnered attention for its practical applications and efficiency in manufacturing processes.

Collaborations

Kazuki has collaborated with notable coworkers such as Shinji Furukawa and Nobuyoshi Yano, contributing to advancements in their respective fields.

Conclusion

Kazuki Oka's contributions to magnetic marker technology demonstrate his innovative spirit and commitment to advancing the field. His patents reflect a deep understanding of material properties and manufacturing techniques, positioning him as a key figure in this area of research.